期刊
CHEMICAL SCIENCE
卷 2, 期 6, 页码 1090-1093出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0sc00628a
关键词
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资金
- POSCO
- Ministry of Education, Science, and Technology (MEST) [2010-0019195, 2010-0029711, 2010-0001873, 2010-0017853, 2010-0027627, R31-2008-000-10059-0, 2010K001097, 20090072972]
We report amorphous-Si nanowire shell anodes, supported by NiSix nanowire cores, by catalyst-free two-step SiH4 chemical vapor deposition, where the metallic core acts as a mechanical supporter and a kinetically unlimited charge supplier. We have achieved highly reversible capacitance of over 3000 mAh g(-1) even at a 2C rate, with stable cyclic retention which stems from the altered electrochemical reactions with relatively small volume expansion routes by a kinetic effect.
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